Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

The Astonishing Proton Precession Magnetometer

Do you have any idea, what’s the main purpose of Proton Precession Magnetometer? Honestly, over half of the people didn’t know the actual function of this device! For your information, the Proton Precession Magnetometer (PPM) is being used to measure very small variations in the Earth’s magnetic field. It detects the ferrous objects on land and at sea. Basically, it uses the principle of Earth’s field nuclear magnetic resonance (EFNMR) to map the positions of demolished walls and building in the land, or to locate wrecked ships for recreational driving at sea! In this project, the Keil MCB2130 board is used as the mainboard to analysis the data. There’s a separate board, which is housing all of the electronics needed for the magnetometer. Besides that, the on-board LPC2138 microcontroller is responsible for sampling a magnetic field and implements an original algorithm to analyze the signal. One of the advantages of the Proton Precession Magnetometer is the ease of use and reliability. To be honest, there’s no precise leveling or orientation is needed. The strength of the total field can be… Continue reading

The Simple to Build LPC2132-Based Ethernet Data Acquisition and Control System

Many equipments/devices have been designed for industrial applications. Let’s take an example, this LPC2132-based Ethernet data acquisition and control system is a dependable data acquisition system. For your information, the project is based on LPC2132 microcontroller. It implements 8-channel discrete switching signals inputs, 2-channel pulse signal input for counter, 4-channel analog signal inputs and 2-channel analog voltage signal outputs. Beside that, it has another 2-channels relay output, where can be used to control simple objects. Basically, all of the data that have been acquired will be then transferred to a monitor server via Ethernet. Since its terminal is well-designed for industrial use, discrete switching signals and analog signals can be easily acquired, especially the analog signal, which both current and voltage signals are acceptable. When discrete and analog signals are acquired and transform to binary data, the datagrams will be encapsulated, and then wait for the server to transfer. This system is very suitable for acquiring data or signals from a large scale industry field, where hundreds of terminals can be grouped together within a internet. Normally, one PC is… Continue reading

The Checkpoint Charlie – The Cute Security System Version!

Guys, would you interested to build a security system that included with an effective access control terminal? It sounds interesting, isn’t it? Ok, you must be wondered, “Why this project is given name as ‘Checkpoint Charlie’ and where it got the name from?” Actually, Checkpoint Charlie (Checkpoint C) was the name given by the Western Allies to a crossing point between East Berlin and West Berlin during the Cold War. Checkpoint Charlie is located at the junction of Friedrichstraße with Zimmerstraße and Mauerstraße. The main purpose of the Checkpoint Charlie was checking all the foreigners and members of the Allied forces! The project is based on a Keil MCB2130 demonstration board. It includes all the necessary external resources, which is required to work as an access control terminal. This Checkpoint Charlie security system is powered by a Java Card smart card, and performs a challenge-response scheme using a symmetric cryptographic algorithm for optimum reliability. Beside that, the terminal can keep track of all activity and transmit remotely upon request through the RS232 interface simultaneously. The ID cards with magnetic stripes… Continue reading

Express Your Love With STMicroelectronics I Love ST!

Who say that most of the home hobbyists are boring and dull? It’s time to prove to the people that even a home hobbyist can be as romantic as other did! If you’re looking for the suitable gift for your loved one, then you’ve came to the right place. Your loved one has some crush with the small and cute thing? Well, don’t worry, as today’s project is “I Love ST microcontroller evaluation board”. This gadget combines touching sentiment with touch capacitance, and is fully-wrapped up in a cute little red heart-shaped PCB ringed with red LEDs. This I Love ST heart-shaped pendant is very unique, where is based on STR750FV2T6Z ARM7TDMI-S 32 bit microcontroller with 256Kb RAM, STR711F R2T6 32 bit microcontroller with 64 kb SRAM and USB interface in 64-pin package. Beside that, it also included with a mini-ROM cutoff CD disc, where can feature information on STMicroelectronics’ 8, 16 and 32 bit microcontrollers. Another incredible application of this pendant is it uses PowerPacDemo to activate the “heart” silkscreen on the face of the I Love ST PCB.… Continue reading

This Carousel is not for You to Ride!

Do you remember the good old times, where your parents always brought you to the nearest funfair? You’re probably have a intimate bound with the carousel, as it’s one of the most popular theme in every funfair! Well, it’s time for you refresh your memory by building this MCU-controllable Carousel. Honestly, this isn’t a real Carousel, where you can have a ride on it, but it’s rather a MCU-controllable camera mount. Which means, you’ll need to find a panning head for this robotics projects (If you’re very familiar with the NXP LPC2148, then go ahead and use it to control this buddy). For building this project, you’ll have to prepare a few old CDs, where it will become the spinner. The axle of the MCU-controllable Carousel is actually a potentiometer, and this is for determining the position. For your information, the gear motor needed to be cobbled together with bits from a windup toy and old motor (You can buy the old motor online, if you didn’t have one). Ok, this MCU-controllable Carousel might look a little bit cumbersome, but… Continue reading

ARM based WebRadio

Probably many of you are listening to the Internet radio from local streams or other WebRadio streams. But mostly radio is played from PC by using like WinAmp or other media player. So why not to have a dedicated WebRadio box for this. [Andreas] has suggested his WebRadio project built of ARM Cortex-M3 microcontroller and VS1053 audio codec IC. It supports following audio formats: MP3, AAC, WMA, Ogg and doesn’t need an external power source as it is powered over Ethernet (PoE). Project is really very neat and professionally looking. Also don’t forget to check out WebRadio based on AVR microcontroller. Continue reading